Big Four Estimation

Question 1

Big four

Answer 1

Ancestry
Sex
Stature
Age

Question 2

Morphoscopic estimation methods

Answer 2

Anterior nasal spine (ANS)
Inferior nasal aperture (INA)
Interorbital breadth (IOB)
Nasal aperture width (NAW)
Orbit outline shape (ORB)
Post bregmatic depression (PBD)
Transpalatine suture (TPS)

Question 3

FORDISC

Answer 3

Computer program used to estimate big four

Question 4

Estimation of sex

Answer 4

• females average 92% of the size of males

- pelvis best indicator of sex

Question 5

Estimating sex from pelvis

Answer 5

• ventral arc: females have a ridge
• medial aspect of ischiopubic ramus: females have sharp border
• sciatic notch: broader in females